Wedding celebrations were occasions of joy, making fasting inappropriate while the bridegroom was present. Jesus uses this social reality to explain the distinctive behavior of his disciples.
The image also carries scriptural associations beyond the immediate analogy.
Hosea 2 and Isaiah 54 and 62 portray the LORD as husband or bridegroom of his covenant people. The imagery expresses covenant love, restoration, and faithfulness.
Because bridegroom language can also function more broadly, the Old Testament background is suggestive rather than an automatic equation of Jesus with YHWH.
Jesus places himself at the center of the disciples' present joy and future sorrow: while the bridegroom is with them they do not fast, but a day will come when the bridegroom is taken away.
The saying anticipates Jesus' death while giving his personal presence decisive significance for the community.
This is Supporting evidence. Bridegroom imagery alone cannot prove deity.
Within Mark's larger scriptural portrait, however, Jesus' assumption of a role strongly associated with God's covenant relationship to his people contributes to the cumulative case.